Various, Blackwood's Edinburgh Magazine - Volume 54…
“ Art under Polygnotus was, however, in a state of formal "parallelism;" certainly it could boast no variety of composition. Apollodorus "applied the essential principles of Polygnotus to the delineation of the species, by investigating the leading forms that discriminate the various classes of human qualities and passions." He saw that all men were connected together by one general form, yet were separated by some predominant power into classes ”
